Most lovers of hammy actors who also like to sing (but should never have gone near a recording studio) have heard or seen Big Bill Shatner's take on Elton John's Rocket Man, right? A combination of low-tech video special effects and a disintegrating tuxedo - who needs a malfunctioning transporter to deliver multiple Shatners?
But ... have you seen TV cult fave Chris Eliott's take on the tune (and the performance)? Chris answers the question "Can a parody of a performance that was already a parody the moment it aired still be funny?" with a resounding, "Affirmative!"
And finally, here's Stewie Griffin's attempt to out-Shatner Shatner. Talk about in-jokes most teenagers wouldn't get (which does dispel the notion that Family Guy is aimed exclusively at adolescent males). Same goes for all of those musical comedy gags and references as well!